SPARK PLUG CONSTRUCTION


BHE011801008T04

• Iridium-tipped spark plugs have been adopted on both trailing and leading sides to improve durability.

• A center electrode with a thick insulator and extremely thin tip (diameter of 0.8 mm {0.03 in}) and small single-ground electrode have been adopted to stabilize firing under a thin fuel-air mixture. At the same time, high-heat resistance has been improved by decreasing the temperature of the electrode and the insulator.

• Spark plugs with an internal resister have been adopted to remove noise caused by the ignition system. The effect of which prevents ignition noise from mixing with the audio system.

•  White or yellow paint (leading side), blue or green paint (trailing side) is on the the spark plugs to prevent mis-installation. (Standard type spark plugs only.)

1
Paint location (standard type spark plugs only)
2
Ground electrode
3
0.8 mm {0.03 in}
4
Center electrode (irdium)